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CVE-2026-98428— ALSA: usb: 6fire: Avoid embedded URBs

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Linux 内核中，已解决以下漏洞： ALSA: usb: 6fire: 避免使用嵌入式 URB USB 6fire 驱动程序在不同结构体中嵌入了用于 PCM、MIDI 和通信的 URB（USB 请求块）。这种实现方式在当今环境下本质上是有缺陷的；由于 URB 使用引用计数进行管理，因此在异步释放 URB 时可能导致Use-After-Free（UAF，释放后使用）漏洞。 为解决此问题，该补丁将这些嵌入式的 URB 转换为通过 正确分配的 URB。由于 会分配 ，因此现在该数组位于 中，原有的 已不再存在。 转

AI Predicted 6.5 Difficulty: Moderate EPSS 0.21% · P11

Affected Version Matrix 17

VendorProduct Version RangeStatus
Linux Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 3ef9093d83ffecb8e5f6c9d5769a52d39df74f7a affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 8b8559aeaba2e51cfee1779b2383b085991f7d81 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 52a43c2d57e774489ac3fbbac06ff02f19bd9a52 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 999f433c09e4668412bd68ca207ae2b4af863862 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< d181434549b3da668110a25d743848cce9897f4e affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 9fe49dbc023e82dfaee7b245997d820d01742a9a affected
< 6.1.189 affected
< 6.6.158 affected
… +9 more rows
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I. Basic Information for CVE-2026-98428

Vulnerability Information
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Vulnerability Title
ALSA: usb: 6fire: Avoid embedded URBs
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ALSA: usb: 6fire: Avoid embedded URBs The USB 6fire driver uses URBs embedded in different structs for PCM, MIDI and communication, and this is basically a buggy implementation nowadays; since a URB is managed with a refcount, this may lead to a UAF when the URB is released asynchronously. For addressing the problem, this patch converts those embedded URBs to ones that are properly allocated via usb_alloc_urb(). The pcm_urb.packets[] is gone, as it's allocated by usb_alloc_urb(), hence it's found in urb.iso_frame_desc[] instead. The conversions are rather straightforward; each embedded struct urb is changed to a pointer, and its callers are updated accordingly. The resource for those structs are released in the common destructor functions (usb6fire_comm_free(), etc), which are called at both the init error path and the disconnect. No functional changes, only compile-tested.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ~ 3ef9093d83ffecb8e5f6c9d5769a52d39df74f7a -
Linux Linux 6.1.189 ~ 6.1.* -

II. Public POCs for CVE-2026-98428

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III. Intelligence Information for CVE-2026-98428

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Other References for CVE-2026-98428 (6)

Same Patch Batch · Linux · 2026-10-14 · 46 CVEs total

CVE-2026-98398 locking/lockdep: Invalidate stale class_cache entries for zapped classes
CVE-2026-98396 powerpc: Do not restore KUAP in arch_exit_to_user_mode_prepare()
CVE-2026-98393 net: ipv4: Fix UDP length overflow with PMTU discover and big MTU
CVE-2026-98391 drm/xe: Guard page-fault worker with runtime PM check
CVE-2026-98389 drm/amdgpu: skip gfx switch_power_profile during GPU reset
CVE-2026-98388 exec: do_close_on_exec() before taking exec_update_lock
CVE-2026-98387 s390/crypto: Fix skcipher_walk return code handling in aes_s390
CVE-2026-98386 scsi: qla2xxx: Use memset_io() to clear QLAFX00 request ring slot
CVE-2026-98390 x86/amd_node: Avoid divide by zero on virtualized systems
CVE-2026-98397 platform/x86: x86-android-tablets: hold device reference for secondary fwnode teardown
CVE-2026-98395 powerpc/entry: Fix irq_soft_mask corruption on replayed interrupt exit
CVE-2026-98399 s390/ipl: Fix NULL deref in dump_reipl without re-IPL parm block
CVE-2026-98400 s390/ipl: Fix NULL deref in kdump without re-IPL parm block
CVE-2026-98402 net: icmp: avoid invalid transport header access in icmp_send tracepoint
CVE-2026-98401 net: iptunnel: fix stale transport header during tunnel decapsulation
CVE-2026-98403 s390/boot: Avoid IPL parameter append past command line
CVE-2026-98404 drm/virtio: Fix a NULL vs ERR_PTR() bug in virtio_gpu_user_framebuffer_create()
CVE-2026-98405 smb: client: fix missing iov bounds check in parse_posix_sids()
CVE-2026-98406 wifi: mac80211: avoid WARN in set_bitrate_mask when sdata not in driver
CVE-2026-98408 watchdog: rzv2h: Avoid division by zero

Showing top 20 of 46 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-98428

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